Joseph ii



(No Model.)

J. H. BRANSON.

PUMP.

No. 503,523. Patented Aug. 15, 1.4893.

WITNS Y y .UVVWTOR ffm/W4 mmm., if @y UNITED STATES PATENT OFFICE.

JOSEPH Il. BRANSON, OF BELMONT, NEV YORK, ASSIGNOR TO THE SANDVIOI-I ENTERPRISE COMPANY, OF SANDlICI-I, ILLINOIS.

PUMP.

SPECIFICATION forming part of Letters Patent No. 503,523, dated August 15, 1893.

Application iiled September 7. 1885. Serial No. 176,412. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH Il. BEANSON, a citizen of the United States, residing at Belmont, in the county of Allegany and State of New York, `have invented certain new and useful Improvements in Pumps, of which the following is a specification, reference being had therein to the accompanying drawings, in which- Figure l represents a side elevation partly in section of a pump constructed according to my improvement; Fig. 2 a vertical central section of the upper cylinder and shell; Fig. 3 a similar section of the lower cylinder, and Fig. 4t aplan of the top of the shell.

This invention relates to an improvement in that class of pumps shown in the Patent No. 249,885 granted jointly to myself and brother and is designed to adapt such pumps for use in drilled wells of small bore and the invention consists in the peculiar combinations and the construction and arrangement of parts hereinafter more particularly described and claimed.

Referring now by letter to the details of construction as shown in the drawings, A represents the standard which may be of any desired form, but preferably similar to that shown in the Patent No. 249,885 before referred to, and well known among pump manufacturers as the four post standard. It consists of four rods or pipes (only two of which B and B are shown in the drawings) connected to castings C D at top and bottom-the upper casting C carrying the support E for the lever F by which the pump is operated. The pipe B, which is screwed into the base D and passes through the cap C, has the curved discharge spout secured to its top, and communicates through a curved passage in the base D with the main discharge pipe G which is screwed into the base D, and carries at its lower end a shell or casing II, into which itis firmly screwed or otherwise secured. This shell carries the upper cylinder of the pump I, which may be either cast therein or formed of seamless tubing and screwed or otherwise secured therein. Below this is suspended the lower cylinder .I by a pipe K of any desired lengthwsay from twenty-tive to one hundred feet-which cylinder may be made in any suitable manner and of any convenient material, and should be provided with a foot or valve L, and it may also have a suction pipe M, although this is not necessary as the cylinder .I may be submerged. Depending from the `lever F is a rod or pipe N which passes loosely through the cap C, base D and an aperture 7L in the top of the shell II and carries the upper piston O, from which pistou depends a rod P connected to the lower piston Q by a'ny suitable coupling. As a further means of sup port for the shell H, I prefer to screw small rods into its top as shown at R which rods are secured in any convenient manner to the base D.

In setting my pump into a bored well having a bore but little larger than the shell, the lower cylinder beingconnected to the upper one by a comparatively small pipe of considerable length, the latter will bend so that the lower cylinder will be substantially in line with the shell and eccentric to the upper pumping cylinder.

The operation of the pump is as follows:- Motion being given to the pistons by the lever F, the upward motion thereof causes the water to enter the lower part of the lower cylinder .I and the downward movement causes the water below said lower piston to pass through it, and thus fill the upper part of said cylinder. The next upward movement of the pistons forces a portion of the water above the lower piston out through the discharge pump and another portion into the upper cylinder. The next downward movement of the piston forces the water in the upper cylinder out of the same into the shell and discharge pipe and a corresponding quantity of the water already contained therein must, of course, pass out of the discharge pipe. It will thus be seen that a continuous stream of water will be discharged from the spout, as the lower piston forces out water when going up, the upper piston when going down, and the air chamber formed by the hollow piston rod tends to equalize the stream at the instant when the stroke is changing.

It will be seen that by the construction and ICO arrangement of parts above set forth and shown in the drawings, I have provided a force pump, double acting in discharge, that will readily enter a well of veryismall bore, which is facilitated by setting the upper cylinder eccentric within the shell, and by connecting the upper shell and lower cylinder with a pipe set in an opening in the bottom of the shell substantially in line with the cylinder inside the shell, or eccentric with the shell itself and concentric with the lower cylinder. This has the advantage of allowing the rod connecting the two pistons, to be attached centrally to both pistons, whereas, if the pipe connecting the shell to the lower cylinder were connected concentrically, the rod connecting the two pistons would necessarily have to be connected to the upper pistoneccentrically, or on one side, unless an extraordinarily large pipe connected the shell and cyllnder, which would add much to the cost of the pump in such deep wells as my pump is designed for. It will also be seen that by the use of a connecting pipe of comparatively small bore as compared to the size of the lower cylinder and the shell,-said pipe will bend or spring and allow the lower cylinder to accommodate-itself to its position so as to work in a well or a bore of substantially the same diameter as said cylinder, which would not be the case where the pipe and cylinder are substantially the same diameter.

I deem it important that the heads or ends of the shell shall be as small in diameter as the body thereof, in order that the pump may enter wells of small bore. It' the caps or ends of the shell and cylinders project beyond the outside of the shell or the lower cylinder the bore and consequently the capacity of the cylinders must be lessened. I also deem it important that there shall be independent openings for the discharge and the piston rod, because the pipe for the discharge may be made much smaller than when the piston rod passes through it.

Some of the features of construction herein shown and described are not claimed herein, as they are claimed in my application, Serial No. 273,643, filed May 11, 1883, as a division of this application.

What I claim as new is- 1. In a pump having two cylinders and pistons, a cylindrical shell of nearly the same diameter as the lower cylinder, and having an internal eccentric cylinder,a pipe of comparatively small diameter connected to the bottom of said shell and to the top of the lower cylinder, substantially in line with the axis of the eccentric cylinder, whereby the piston rod of the lower cylinder may hang under the center of the upper piston, or the connecting pipe bend to one side, as desired, substantially as set forth.

2. In a pump having two cylinders, a cylindrical shell of nearly the same diameter as the lower cylinder, having a cylinder set eccentrically within it, two openings above the discharge pipe and piston rod and an eccentrically-placed opening in its bottom, a pipe of smaller diameter than the lower cylinder, ru nning from said eccentric opening to the lower cylinder, a piston in each cylinder and a connection between said pistons, substantially as described.

3. In a pu mp having two cylinders, a cylindrical shell of nearly the same diameter of the lower cylinder, having an internal eccentric cylinder, an opening in each end substantially in line with the eccentric cylinder and an opening at one side of the top to receive the discharge pipe, a pipe of smaller diameter than the lower cylinder in line with the eccentric opening in the bottom of the shell and connecting with the lower cylinder, a piston in each cylinder, and a connection between the said pistons having its axis in line with the axis of the upper piston, substantially as described.

In testimony whereof I affix my signature, in presence of two witnesses, this 4th day of September, 1885.

JosEPi-i A`n. BRANsoN. 

